diff --git a/application/models/crm/Prestudent_model.php b/application/models/crm/Prestudent_model.php
index 2e014800c..4ac78cb35 100644
--- a/application/models/crm/Prestudent_model.php
+++ b/application/models/crm/Prestudent_model.php
@@ -13,6 +13,27 @@ class Prestudent_model extends DB_Model
 
 		$this->load->model('crm/prestudentstatus_model', 'PrestudentstatusModel');
 	}
+	
+	/**
+	 * Get students UID by PrestudentID.
+	 * @param $prestudent_id
+	 * @return mixed
+	 */
+	public function getUID($prestudent_id)
+	{
+		$this->addSelect('uid');
+		$this->addJoin('public.tbl_person', 'person_id');
+		$this->addJoin('public.tbl_benutzer ', 'person_id');
+		
+		$result = $this->load($prestudent_id);
+		
+		if (!hasData($result))
+		{
+			show_error('Failed getting UID by prestudent_id');
+		}
+		
+		return $result->retval[0]->uid;
+	}
 
 	/**
 	 * getLastStatuses